CN101034529A - The method for transferring the display screen driving data and control driving module of the display unit - Google Patents
The method for transferring the display screen driving data and control driving module of the display unit Download PDFInfo
- Publication number
- CN101034529A CN101034529A CNA2007100732315A CN200710073231A CN101034529A CN 101034529 A CN101034529 A CN 101034529A CN A2007100732315 A CNA2007100732315 A CN A2007100732315A CN 200710073231 A CN200710073231 A CN 200710073231A CN 101034529 A CN101034529 A CN 101034529A
- Authority
- CN
- China
- Prior art keywords
- control
- data
- configuration
- shift register
- display unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention provides a method for transmitting display screen driving data and a display cell control and driving module. And the display cell control and driving module comprises: N-bit shift register for inputting grey data and control/configuration data, where in the N-bit data, the grey data occupies X bits and the control/configuration data occupies 1 bit. And the technical problem to be solved is reducing jitter and dither of the display screen when transmitting control/configuration data, and improving display effect of the display screen. As compared with the existing techniques, the advantages of the invention: it reduces the grey data transmitting cycle occupied for transmitting the control/ configuration data, and improves the display stability and quality.
Description
Technical field
The present invention relates to a kind of method and display unit control and driving module that transmits display screen driving data.
Background technology
LED (light emitting diode) display screen can be easier to realize large-sized demonstration that reliability is higher, is suitable as various large-scale broadcasting bulletin systems.The most basic display unit in the LED display is single LED, and display screen is formed the row matrix column array successively for several LED.Control and driving LED display screen display image are to realize by the brightness to single led demonstration.The brightness of LED is adjusted the brightness of LED along with the electric current that outputs to this LED is relevant, will adjust the electric current that outputs to LED exactly.Adjusting the electric current of LED can realize by the mode of adjusting size of current, and the mode that also can take to adjust the dutycycle of the current impulse that outputs to LED realizes.If adopt the mode that changes the output current size to adjust LED brightness, then the speed of this brightness change is slower, so that is difficult to guarantee the fluency of dynamic video image.So,, generally adopt the demonstration of width modulation output driving LED in order to realize smooth video output.Width modulation is output as voltage controlled current source, and this voltage controlled current source is with input control voltage and gray scale numerical value.Control voltage will be controlled the output of the integral body of this width modulation output, be used to regulate the overall brightness of this LED; And gray scale numerical value will be adjusted the dynamic output of this voltage controlled current source, be used to adjust the dynamic brightness change of LED.
LED is monochromatic luminous demonstration, and LED display is if monochromatic gray scale shows that then display screen pixel cell is a LED.And if display screen is wanted display color, each display pixel of LED display adopts and is respectively 3 yellow, green, blue LED, and the brightness of the LED of this red, green, blue look is adjusted, and then can realize the colour demonstration of this pixel.Be sent to the control and driving module of this display unit at the gradation data of each display unit, this control and driving module is exported corresponding electric current to display unit.
When display screen shows, need control corresponding/configuration data that the demonstration of display unit is regulated, as parameters such as contrasts, to obtain to be fit to the optimal display result of display screen surrounding environment.Gradation data is used to provide the brightness value of display unit demonstration, and control/configuration data is used to control the demonstration of display unit, perhaps is used to dispose display parameter such as contrast.Each display unit control and driving module also needs control corresponding/configuration data.The driving data of display unit comprises gradation data and control/configuration data.
It is high that the transmitted frequency of the gradation data of display unit is wanted, and could satisfy the smoothness that display screen shows, the transmitted frequency of gradation data is generally 300 to 6000 hertz now.And control/change frequency of configuration data is just much lower, and 0.1 hertz transmitted frequency just can meet the demands.Drive for display screen now, the method for taking all is in certain time interval, arrives the control and driving module of respective display unit by the disposable transmission control/configuration data of serial data line that transmits gradation data.So when transmitting control/configuration data, must stop the transmission to gradation data, display unit does not have new gradation data in this time period, the display frame of entire display screen shake will occur or beat.
Initial display screen is because function is simple, and the control/configuration data figure place that needs is 4, and the needed time of these data of disposable serial transfer is shorter relatively, and beating or shaking of display screen picture will be very not obvious, so that be difficult to discover.Along with the function of display screen is more and more, become increasingly complex, needed control/configuration data is also more and more longer, even the needed control/configuration data of some display screen is 40 word lengths, it is just quite long to transmit the time cycle that this control/configuration data takies like this, the display frame of entire display screen perceptible shake will occur or beat, and have a strong impact on display effect.
Summary of the invention
The technical matters that will solve of the present invention is, reduces when transmitting the long control/configuration data of multiword, and display screen shows beats and shake, with the display effect of raising display screen.
In order to solve the problems of the technologies described above, the invention provides a kind of video data driving method, to the display unit control and driving module, this method comprises the steps: by serial data line input gray level data and control/configuration data
A. the data line serial mode send a N bit data bag to described display unit control and driving module; Then
B. described display unit control and driving module is isolated the video data of X position and control/configuration data of 1 from described N bit data bag; Then
C. described 1 control/configuration data writes the control/configuration shift register in the described display unit control and driving module successively;
D. above step a, b, c repeat Y time in proper order, accumulate the control/configuration data that has write a Y position in described control/configuration shift register successively; Then
E. Y position control/configuration data is write register, be used for control and adjust described display unit control and driving module.
Described N is 17; Described X is 16; Described Y is 10.
Described 17 bit data bags are made up of continuous 16 gradation datas and 1 control/configuration data.
A complete control/configuration data is 10, and it is 10 1 data that this control/configuration data of 10 is torn open successively, and this control/configuration data of 1 and 16 s' gradation data is combined transmitted successively.By above technical scheme, the display unit control and driving module can receive control/configuration data of complete 16 video datas and 1 in one-period, then by 10 above-mentioned cycles can complete reception control/configuration data of one 10.Can not need to take a long time like this transmits control/configuration data at interval, and significantly beating and shaking will can not appear in display screen.
The present invention also provides a kind of display unit control and driving module, and this module comprises:
Be used for the serial data input of input gray level data and control/configuration data;
Be used for the clock input of input system clock;
Be used for the data latching control of input control signal;
Be used to receive the shift register of the data of described serial data input input;
Be used to utilize control/configuration data and gradation data to drive the simulation output of display unit;
Receive the signal of described data latching control, and control the synchro control of each register;
Be connected with described shift register, be used to receive the control/configuration shift register of control/configuration data;
Be used to receive the control configuration register of described control/configuration shift register output data, described control configuration register outputs to described simulation output;
Be used to receive the display buffer that the gradation data of device output is sent in described displacement, described display buffer outputs to described simulation output.
Described shift register is 17, and described display buffer is 16, and the described shift register of stating is that 16 bit parallels are connected with described display buffer.
Described shift register is that 1 bit serial connects to described control/configuration shift register, and described control/configuration shift register is that 10 bit parallels connect to described control/configuration register.
Described control/configuration register is the storage organization of 4 10 bit bytes.
Display screen is that display unit is formed with the ranks matrix.Each display unit drives by a driver module and shows.The video data of delegation and control/configuration data are by a serial data input.The driver module of delegation connects the mutual cascade of mode of the serial data input of another display unit control and driving module by 17 bit shift register output terminals.Outside display screen driving data is by sending into the driving data of some each and every one display units of display screen successively in the serial data input one-period.。The structure of this driving data is 16 gradation data and control/configuration data of 1.By the corresponding control signal of synchro control, 10 described cycles, control/configuration shift register can obtain control/configuration data of 1 10, and this control/configuration data of 10 is stored into the relevant position of described control/configuration register successively.Described control/configuration register is 4 10 a storage organization, through 40 described cycles, just obtains control/configuration data of 4 10 at described control/configuration register.
Compare with prior art, the invention has the advantages that, reduce when transmitting the long control/configuration data of multiword, display screen shows beats and shakes, with the display effect of raising display screen.
Description of drawings
Fig. 1 is the structural representation of display unit control and driving module of the present invention;
Fig. 2 is the cascade structure synoptic diagram of display unit control and driving module of the present invention;
Fig. 3 is the data structure synoptic diagram of the present invention's 17 bit shift register.
Embodiment
Display screen is a matrix array by display unit, the cascade successively as shown in Figure 1 of the control and driving module 1 of several display units.Serial data input 2 connects the shift register 10 of display unit control and driving module 1, this shift register 10 is a fifo queue, by 2 pairs of described shift register 10 row cascades successively of serial data input, the control and driving module 1 of different display units links together.
As shown in Figure 2, display unit control and driving module 1 comprises: be used for the serial data input 2 of input gray level data and control/configuration data; Be used for the clock input 3 of input system clock; Be used for the data latching control 4 of input control signal; Be used to receive the shift register 10 that described serial data is imported the data of 2 inputs; Be used to utilize control/configuration data and gradation data to drive the simulation output 14 of display unit 5; Be connected with described shift register 10, be used to receive the synchro control 12 of control/configuration data; Described synchro control 12 output control signal corresponding are controlled described shift register 10, display buffer 11, control/configuration shift register 15 and control/configuration register 13 respectively and are counted and latch and transmit data.
Be used to receive the control configuration register 13 of described control/control/configuration data that configuration shift register 15 is exported, described control configuration register 13 outputs to described simulation output 14; Be used to receive the display buffer 11 that the gradation data of device 10 outputs is sent in described displacement, described display buffer 11 outputs to described simulation output 14.
Described shift register 10 is 17, and described display buffer 11 is 16, and the described shift register 10 of stating is that 16 bit parallels are connected with described display buffer 11.Described simulation output 14 also is that 16 bit parallels are connected with described display buffer 11.
Described shift register 10 connects to 1 bit serial of described control/configuration shift register 15, and described control/configuration shift register 15 is that 10 bit parallels connect to described control/configuration register.
Described control/configuration register 13 is the storage organization of 4 10 bit bytes.
The display unit 5 of display screen is LED, and described display unit 5 needed gradation datas are 16, and control/configuration data is 40.Described 40 control/configuration data is divided into control/configuration data of 40 1 successively, this control/configuration data of 1 and 16 s' control/configuration data is formed a driving data, and the data structure of this driving data is identical with the data structure of shift register shown in Figure 3 10.
If P display unit driver module 1 cascade successively arranged, then in one-period, send the shift register 10 of the driving data of respective display unit 5 successively to respective display unit control and driving module 1 by serial data input 2.This moment, signal was sent in described data latching control 4, and described shift register 10 latchs this driving data.At this moment, described shift register 10 is delivered to described display buffer 11 to 16 gradation datas of the driving data that latchs, and is used to drive described simulation output 14; Described shift register 10 is delivered to described control/configuration shift register 15 to 1 control/configuration data of the driving data that latchs.In an above-mentioned cycle, described control/configuration shift register 15 writes control/configuration data of 1.In continuous 10 above-mentioned cycles, described control/configuration shift register 15 writes control/configuration data of one 10.At this moment, the corresponding latch signal of described data latching control 4 inputs is to described synchro control 12, and then this control/configuration data of 10 is written into described control/configuration register 13.
Described control/configuration register 13 is 4 10 a storage organization, controls according to described data latching control 4 inputs, by the way, is written into control/configuration data of 4 10 successively.
The control of described data latching control 4 is defined as follows table, and the clock number is represented the system clock number that the level signal width of described data latching control 4 outputs takies; Gray-scale Control is represented the order of this level signal to the gradation data latch operation; This level signal of control/configuration data control expression is to the order of control/configuration data latch operation.
| The clock number | Gray-scale Control | The control of control/configuration data |
| 0 | Keep | Keep |
| 1 | Data latching is to display | 1 bit data is sent to control/ |
| 2 | Data latching is to display | 10 data latching in the control/ |
| 3 | Data latching is to display | 10 data are sent to control/configuration register, and synchronously |
| 4 | Keep | Keep |
| 5 | Data latching is to display | 1 bit data is sent to control/ |
| 6 | Data latching is to display | 10 data latching in the control/ |
| 7 | Data latching is to display | 10 data are sent to control/configuration register, and synchronously |
As above table, gradation data refers to that synchronously the gradation data between the display unit control and driving module 1 of cascade is synchronous; Control/configuration data refers to that synchronously control/configuration data of 10 writes described control/configuration register 13 corresponding storage unit.
Claims (7)
1, a kind of method that transmits display screen driving data to display unit control and driving module (1), is characterized in that this method comprises the steps: by serial data line input gray level data and control/configuration data
A. the data line serial mode send a N bit data bag to described display unit control and driving module (1); Then
B. described display unit control and driving module (1) is isolated the video data of X position and control/configuration data of 1 from described N bit data bag; Then
C. described 1 control/configuration data writes the control/configuration shift register (15) in the described display unit control and driving module (1) successively;
D. above step a, b, c repeat Y time in proper order, accumulate the control/configuration data that has write a Y position in described control/configuration shift register (15) successively; Then
E. Y position control/configuration data is write register, be used for control and adjust described display unit control and driving module (1).
2, the method for transmission display screen driving data according to claim 1 is characterized in that, described N is 17; Described X is 16; Described Y is 10.
3, the method for transmission display screen driving data according to claim 2, described 17 bit data bags are made up of continuous 16 gradation datas and 1 control/configuration data.
4, a kind of display unit control and driving module, this module (1) comprising:
Be used for the serial data input (2) of input gray level data and control/configuration data;
Be used for the clock input (3) of input system clock;
Be used for the data latching control (4) of input control signal;
Receive the shift register (10) of the data of described serial data input (2) input;
Utilize control/configuration data and gradation data to drive the simulation output (14) of display unit (5);
Receive the signal of described data latching control (4), and control the synchro control (12) of each register;
It is characterized in that this module (1) also comprises:
Be connected with described shift register (10), be used to receive the control/configuration shift register (15) of control/configuration data;
Be used to receive the control configuration register (13) of described control/configuration shift register (15) output data, described control configuration register (13) outputs to described simulation output (14);
Be used to receive the display buffer (11) that the gradation data of device (10) output is sent in described displacement, described display buffer (11) outputs to described simulation output (14).
5, display unit control and driving module according to claim 4, it is characterized in that, described shift register (10) is 17, and described display buffer (11) is 16, and the described shift register (10) of stating is that 16 bit parallels are connected with described display buffer (11).
6, display unit control and driving module according to claim 4, it is characterized in that, described shift register (10) is that 1 bit serial connects to described control/configuration shift register (15), and described control/configuration shift register (15) is that 10 bit parallels connect to described control/configuration register.
7, according to claim 4 or 6 described display unit control and driving module, it is characterized in that described control/configuration register (13) is the storage organization of 4 10 bit bytes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100732315A CN101034529A (en) | 2007-02-06 | 2007-02-06 | The method for transferring the display screen driving data and control driving module of the display unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100732315A CN101034529A (en) | 2007-02-06 | 2007-02-06 | The method for transferring the display screen driving data and control driving module of the display unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101034529A true CN101034529A (en) | 2007-09-12 |
Family
ID=38731057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100732315A Pending CN101034529A (en) | 2007-02-06 | 2007-02-06 | The method for transferring the display screen driving data and control driving module of the display unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101034529A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163418A (en) * | 2010-02-23 | 2011-08-24 | 晶锜科技股份有限公司 | Serial transmission device |
| CN102881251A (en) * | 2012-08-20 | 2013-01-16 | 深圳市易事达电子股份有限公司 | Current drive circuit |
| CN104240635A (en) * | 2013-06-10 | 2014-12-24 | 缪朝晖 | Display control interface circuit |
-
2007
- 2007-02-06 CN CNA2007100732315A patent/CN101034529A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102163418A (en) * | 2010-02-23 | 2011-08-24 | 晶锜科技股份有限公司 | Serial transmission device |
| CN102881251A (en) * | 2012-08-20 | 2013-01-16 | 深圳市易事达电子股份有限公司 | Current drive circuit |
| CN102881251B (en) * | 2012-08-20 | 2015-08-26 | 深圳市易事达电子有限公司 | Current driving circuit |
| CN104240635A (en) * | 2013-06-10 | 2014-12-24 | 缪朝晖 | Display control interface circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104091558B (en) | The driving method of LED display panel and system | |
| EP2306441B1 (en) | Scan-type display device control circuit | |
| CN100343797C (en) | Display control device and method and output drive device and method used for it | |
| CN1773338A (en) | Liquid crystal display and driving method thereof | |
| US8922539B2 (en) | Display device and clock embedding method | |
| CN1737897A (en) | Display device and drive unit thereof and driving method | |
| CN110827768A (en) | Backlight device and display device having the same | |
| CN1991962A (en) | Display and driving method thereof | |
| US20080238895A1 (en) | Driving Device of Display Device and Related Method | |
| CN1694143A (en) | Column driver and flat panel display having the same | |
| CN1231883C (en) | Driving circuit for active matrix organic LED | |
| CN1604173A (en) | Using packet transfer for driving LCD panel driver electronics | |
| CN103325344B (en) | Interactive display device and method of LED (Light Emitting Diode) display driver | |
| CN1940645A (en) | Apparatus and method for transmission data, apparatus and method for driving image display device using the same | |
| CN1609941A (en) | Liquid crystal display device and driving method thereof | |
| CN1306464C (en) | Planel display | |
| CN1534560A (en) | Data driving circuit and its method of driving data | |
| CN1661659A (en) | Method for driving liquid crystal display device | |
| US8988469B2 (en) | Image display device and driving method thereof | |
| CN101034529A (en) | The method for transferring the display screen driving data and control driving module of the display unit | |
| JP2017219586A (en) | Signal supply circuit and display | |
| KR100386732B1 (en) | Active matrix display apparatus capable of displaying data efficiently | |
| CN1744172A (en) | Display and method for driving a display | |
| KR20220047113A (en) | Backlight system, display device including the backlight system and method of transferring data in the backlight system | |
| TWI507079B (en) | Driving apparatus of light emitting diode and driving method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20070912 |